joint_velocity_controller.h

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#ifndef EFFORT_CONTROLLERS__JOINT_VELOCITY_CONTROLLER_H
#define EFFORT_CONTROLLERS__JOINT_VELOCITY_CONTROLLER_H

#include <ros/node_handle.h>
#include <boost/thread/condition.hpp>
#include <boost/scoped_ptr.hpp>
#include <hardware_interface/joint_command_interface.h>
#include <controller_interface/controller.h>
#include <control_msgs/JointControllerState.h>
#include <std_msgs/Float64.h>
#include <control_toolbox/pid.h>
#include <realtime_tools/realtime_publisher.h>

namespace effort_controllers
{

class JointVelocityController: public controller_interface::Controller<hardware_interface::EffortJointInterface>
{
public:

  JointVelocityController();
  ~JointVelocityController();

  bool init(hardware_interface::EffortJointInterface *robot, const std::string &joint_name, const control_toolbox::Pid &pid);

  bool init(hardware_interface::EffortJointInterface *robot, ros::NodeHandle &n);

  void setCommand(double cmd);

  void getCommand(double & cmd);

  void starting(const ros::Time& time);

  void update(const ros::Time& time, const ros::Duration& period);

  void getGains(double &p, double &i, double &d, double &i_max, double &i_min);

  void printDebug();

  void setGains(const double &p, const double &i, const double &d, const double &i_max, const double &i_min);

  std::string getJointName();
  
  hardware_interface::JointHandle joint_;
  double command_;                                
private:
  int loop_count_;
  control_toolbox::Pid pid_controller_;           
  //friend class JointVelocityControllerNode; // what is this for??

  boost::scoped_ptr<
    realtime_tools::RealtimePublisher<
      control_msgs::JointControllerState> > controller_state_publisher_ ;

  ros::Subscriber sub_command_;

  void setCommandCB(const std_msgs::Float64ConstPtr& msg);
};

} // namespace

#endif